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Till recently the use of contact lenses was limited to those who needed to correct their single vision problems such as shortsightedness. Often those who needed to correct both short and long distance sight problems such as the slightly older generation were unable to use contact lenses.
But in 1958, Newton K. Wesley of Chicago 's Eye Research foundation invented a new system of making contact lenses - he put the distance lenses in the centre surrounded by a circle of near sight lenses. These were sold at an unbelievable price of $200 to $ 400 per pair.
The scenario has changed considerably ever since. Now bifocals are prescribed as easily and as frequently as ordinary contact lenses. The material is much lighter and the lenses are built in various ways. They may consist of a long distance lens on the upper part and a shortsighted one at the bottom portion. They can even be prescribed as disposable lenses.
They options available are many. Some people wear reading glasses over their contact lenses when they need to read. This makes it easier for them, since both eye vision problems can be tackled easily.
However, if you do order bifocal contact lenses they are available both as soft lenses and as rigid lenses. They can also be manufactured to match your progressive spectacle prescriptions. In a case like this the power of the lens changes gradually from the centre to the edge of the lens.
There is also the option of a monovision contact lens - where the distance lens is placed in one eye and the short sightedness lens is placed in the other eye. However most people find bifocal contact lenses easier and more comfortable to use.
Please do get a correct and thorough checkup done before you place the order for bifocal contact lenses. The eyes need to adjust to them, and for some it takes a little longer to make the adjustment. However, once your eyes get used to them they are an amazing innovation.
As we have stated earlier, the options available are myriad - rigid or soft lenses, concentric or simple bifocals, or simple lenses and spectacles which are used when we need to read or deal with something that is nearby.
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